摘要
马路坪矿是世界少有、国内目前唯一不经选矿便可直接生产高浓度磷肥的优质原料产地,矿山采用脉内采准中深孔落矿嗣后充填采矿法开采。通过FLAC3D有限差分软件,分析分段采场不同开采跨度下的采场位移与变形特征、顶板最大主应力、顶板垂直应力分布、采场塑性区分布等数值计算结果,得出合理的采场跨度为20 m。
Maluping mine is a high quality sources of raw materials which could produce high-concentration phosphate fertilizer directly without ore dressing, and it is rare in the world and the only one in China currently. In-vein preparatory work medium-length hole falling ore afterwards filling mining method was adopted. Through FLAC3D finite difference software, numerical calculation result such as characteris- tic of displacement and deformation, maximum principal stress of roof, roof vertical stress distribution, plastic zone distribution of stope of different mining spans of sublevel stope , reasonable stope span is 20m is obtained.
出处
《现代矿业》
CAS
2010年第11期5-7,共3页
Modern Mining
基金
国家自然科学基金和上海宝钢集团公司联合资助(编号:51074177)
关键词
马路坪矿
数值计算
矿房跨度
Maluping mine
Numerical calculation
Room span